diff --git a/apps/CMakeLists.txt b/apps/CMakeLists.txt
index 8c0e6f38..ba652c76 100644
--- a/apps/CMakeLists.txt
+++ b/apps/CMakeLists.txt
@@ -34,11 +34,11 @@ IF(PYTHONLIBS_FOUND)
 	ADD_SUBDIRECTORY(pin_collect)
 ENDIF(PYTHONLIBS_FOUND)
 ADD_SUBDIRECTORY(precoded_announce)
-#IF(PYTHONLIBS_FOUND)
-#IF(SIP_FOUND)
-#	ADD_SUBDIRECTORY(py_sems)
-#ENDIF(SIP_FOUND)
-#ENDIF(PYTHONLIBS_FOUND)
+IF(PYTHONLIBS_FOUND)
+IF(SIP_FOUND)
+	ADD_SUBDIRECTORY(py_sems)
+ENDIF(SIP_FOUND)
+ENDIF(PYTHONLIBS_FOUND)
 ADD_SUBDIRECTORY(reg_agent)
 ADD_SUBDIRECTORY(registrar_client)
 ADD_SUBDIRECTORY(sw_prepaid_sip)